KFI Seating IM810 Armless Stacking Chair, Commercial Grade, 1.5-Inch, Black Vinyl/Black Frame, Made in the USA Lightweight and stylish stack chairs are perfect for any office and have a convenient hand grip on the back for easy transportation and carrying. Built with 13/16" Square Tubing that is crafted from 18 Gauge Steel, making it durable and sturdy. 1.5" dome seat upholstered in black vinyl for extra seating comfort Frame is powder-coated in black and has rear and side stacking bars for added support 17.5" Seat height with rocker glides on the legs to prevent floor damage. Can stack 12 high for easy setup and storage when not in use. 5 Year Commercial Grade Frame Warranty, made in the USA, and GSA Approved.